A. Theological Syntheses
Scripta super libros Sententiarum -- c. 1256.
Summa contra Gentiles -- 1261-1263
Summa theologiae -- 1265-1273
B. Academic Disputations
Quaestiones disputatae:
De veritate -- 1256-1259
De potentia Dei -- 1259-1268
De spiritualibus creaturis -- 1269
De anima -- 1269-1270
De unione Verbi incarnati -- 1268-1272
De malo -- 1263-1271
De virtutibus -- 1269-1272
?De immortalitatae animae?
?Utrum anima conjuncta cognoscat seipsam per essentiam?
Quaestiones de quodlibet I-XII:
I-VI -- 1269-1272
VII-XI -- 1256-1259
XII -- c. 1270
C. Expositions of Holy Scripture
Expositio in Job ad litteram -- c. 1260
In Psalmos Davidis expositio -- 1272-1273
Expositio in Canticum Canticorum -- a lost work
Expositio in Isaiam prophetam -- 1256-1259
Expositio in Jeremiam prophetam -- 1267-1268
Expositio in Threnos Jeremiae prophetae -- 1267-1268
Glossa continua in Matthaeum, Marcum, Lucam, Joannem -- 1263-1264 (The Glossa is commonly called the Catena aurea)
Expositio in evangelium s. Matthaei -- 1269-1272
Expositio in evangelium s. Joannis -- 1269-1272
Expositio in s. Pauli Epistolas -- 1259-1272
D. Expositions of Aristotelian Works
In libros Peri Hermeneias expositio -- 1269-1271
In libros posteriorum Analyticorum expositio -- 1268
In octo libros Physicorum expositio -- 1268-1271
In libros De caelo et mundo expositio -- 1272-1273
In libros De generatio et corruptione expositio -- 1269-1273
In libros De anima expositio -- 1268-1271
In librum De sensu et sensato expositio -- 1267-1271
In librum De memoria et reminiscentia expositio -- 1267-1271
In duodecim libros Metaphysicorum expositio -- 1270-1272
In decem libros Ethicorum expositio -- 1271-1272
In libros Politicorum expositio -- 1265-1272
E. Other Expositions
Expositio super librum Boethii De Trinitate -- 1257-1259
Expositio in librum Boethii De hebdomadibus -- 1257-1259
Expositio in Dionysium De divinis nominibus -- c. 1261
Super librum De causis expositio -- 1271
F. Polemical Writings
Contra impugnates Dei cultam et religionem -- 1256
De perfectione vitae spiritualis -- 1270
Contra pestiferam doctrinam retrahentium pueros a religionis ingressu -- 1270
De unitate intellecuts, contra Averroistas -- 1270
De aeternitate mundi, contra murmurantes -- 1271
G. Treatises on Special Subjects
De fallaciis ad quosdam nobiles artistas -- 1244-1245
De propositionibus modalibus -- 1244-1245
De ente et essentia -- before 1256
De principiis naturae ad fratrem Sylvestrum -- before 1256
Compendium theologiae ad fratrem Reginaldum socium suum carissimum -- 1260-1273
De substantiis separatis, seu de angelorum natura, ad fratrem Reginaldum, socium suum carissimum -- after 1270
De Regno (De regimine principium), ad regem Cypri -- 1267
H. Expert Opinions
Contra errores graecorum, ad Urbanum IV Pontificem Maximum -- 1263
Responsio ad fr. Joannem Vercellensem, Generalem Magistrum Ordinis Praedictatorum, de articulis CVIII ex opere Petri de Tarentasia -- 1264-1266
Responsio ad fr. Joannem Vercellensem, Generalem Magistrum Ordinis Praedictatorum, de articulis XLII-- 1271
De forma absolutionis, ad Generalem Magistrum Ordinis -- 1269-1272
De secreto -- 1269
I. Letters
To the Archbishop of Palermo: De articulis fidei et Ecclesiae sacramentis, ad archiepiscopum Panormitanum -- 1261-1262
To Bernard Ayglier, Abbot of Monte Cassino: Ad Bernardum, abbatem Cassinensem -- 1274
To the Archdeacon of . . . ? Expositio super primam decretalem "De fide catholica et sancta Trinitate" et super secundam "Damnamus autem"-- 1259-1266
To the Cantor of Antioch: De rationibus fidei contra Saracenos, Graecos et Armenos, ad Cantorem Antiochiae -- 1261-1264
To Master Philippus: De motu cordis, ad Magistrum Philippum -- 1270-1271
To Master Philippus: De mixtione elementorum -- 1270-1271
To Brother Baxianus da Lodi: Responsio ad lectorem Venetum de articulis XXXVI -- 1271
To Brother Gerald of Besançon: Responsio ad lectorem Bisuntinum de atriculis VI -- date unknown
To Brother Johannes of Viterbo: De emptione et venditione ad tempus -- 1262
To Brother Johannes: De modo studendi
To the Duchess of Brabant: De regimine Judaeorum, ad Ducissam Branantiae -- 1270-1272
To Sir James of . . . ? De sortibus ad Dominum Jacobum de . . . ? -- 1269-1272
To a Gentleman from beyond the Alps: De occultis operationibus naturae, ad quendam militem ultramontanum -- date unknown
To a Gentleman from beyond the Alps: De judiciis astrorum, ad quendam militem ultramontanum
-- date unknown
J. Liturgical Pieces and Sermons
Officium de festo Corporis Christi, ad mandatum Urbani Papae IV -- 1264
Adoro te and other prayers
Sermons:
De duobus praeceptis caritatis et decem legis praeceptis -- 1273
Devotissima expositio super symbolum apostolorum -- 1273
Expositio devotissima orationis dominicae -- 1273
Devotissima expositio super salutationae angelica -- 1269-1273
and many other sermons
K. Works of Uncertain Authenticity
De instantibus
De natura verbi intellectus
De principio individuationis
De natura generis
De natura accidentium
De natura materiae
De quatuor oppositis
De demonstratione
1. For the most recent, most exhaustive, detailed, and painstakingly accurate descriptive catalogue of the works, embodying the results of decades of research by himself and others concerning the authenticity and chronology of those works, see I.T. Eschmann, O.P., "A Catalogue of St. Thomas' Works: Bibliographical Notes" in Appendix to Etienne Gilson's The Christian Philosophy of Saint Thomas Aquinas, Random House, New York, 1956, pp. 381-439. This list is following Father Eschmann's classification and order. One has but to consult his work to appreciate how provisional many of the dates in this list are.